The frequency aggregate updating section 40 outputs the frequency aggregate of all the frequency values in which the harmonic frequency component complex amplitude parameter of each quasi-frequency signal model and the distributed components of the observation time frequency components are making an acute angle on a complex plane. 周波数集合更新部40は、各擬似周期信号モデルの調波成分複素振幅パラメータと観測時間周波数成分の分配成分とが複素平面上で鋭角をなす全ての周波数値の周波数値集合を出力する。 - 特許庁